Tubular gas producer



March 24, 1925.

1,530,709 J. BABIN TUBULAR GAS PRODUCER Filed July 12 1922 Patented Mar. 24, 1925.

UNITED STATES 1,553,709 PATENT creme.

nuns BAIBIN, or rams, rnancn.

TUBULAR GAS PRODUCER.

Application filed July '12,

To. all whom it may concern:

' zen of the French Republic, residing at Paris, France, have invented a certain new and useful Improvement in Tubular Gas Producers, of which the following is a specification.

My invention relates to a tubular gas producer employing powdered carbon fuel, admitting the. use of-the lowest grades. of dust as the combustible and being adapted while being of ver small dimensions to provide for the gasi cation of said combustible at pressures which are as high as may be required for certain uses, especially for high power engines of the internal combustion and separate compression type.

The said apparatus is composed of two long tubes in coaxial position; the internal tube admits at the upper part the mixture" of compressed air and carbon fuel powder and constitutes a furnace; at the lower'part it forms a heat-exchanging device for the fresh supply of air intended for the combustion and entering in an opposite direction through the external tube.

The carbon fuel powder is prepared on the spot by the wet process. It is injected together with the quantity of water necessary for the'reaction into the internal tube constituting a furnace wherein a sudden vaporization will provide for its rapid dispersion in. the hot air. An air meter serves at'the same time to control the carbon fuel feed, providing for a slight excess of the latter which is intended to form a reducing medium.

The internal tube is extended at the lower 'part by a worm tube wherein the injected .water effects the scrubbing of the gas and forms with the ash a mud which can be removed with facility during the operation. The said gas producer will thus operate in a continuous and automatic manner, while providing for recovery of the heat, and the output is practically unlimited by reason of the active nature of the combinations taking place under pressure.

The said apparatus is represented in a diagrammatic manner in the accompanying figure, which is a vertical section of the apparatus.

It essentially comprises an outer tube 1 including an insulating jacket 2 and adapted to receive compressed air at the lower part 3 which air is supplied by the pipe at.

same.

1922. Serial No..574,414.

Within the said tube is disposed a second tube 5 open at the top and provided upon a portion of the internal wall with a refrao tory covering 6; said tube is extended at the lower part by the coiled tube 7 opening at 8 into an ash receptacle 9 provided with an emptying cook 10 and a gas outlet pipe 11. The nozzle 12,serves for the injection of water into the coiled tube 7. "To the top of the tube 1 is secured the powdered coal receptacle 13 ending at the bottom in a pro portioning feeding device 14;. Above the re ceptacle 13 is disposed a hopper 15 provided with the cocks 16, 17 said hopper is also r connected by a pipe 18 having thereon the cock 19 with the compressed air'pipe 4 serving to produce within the receptacle 13 a. pressure at least equal to the pressure prevailing in the tubes 1 and 5. Upon the piping 4' is disposed a compressed air meter 20 formed forexample by a blade pump wherehot walls of the tube 5 and then enters the latter through the upper openin of the At the same time the feeding and measuring device 14 drops into the tube '5 the coal powder which has been previously moistened with water in the requisite proportion. By the action of the heat of the incandescent wall 6, the water mixed with the coal will be suddenly vaporized and will disseminate the particles of the coal. In this mixture of air, steam and coal dust a portion of the coal is rapidly caused to burn forming a combustible producer as: Therefore the upper part of tube 5 wit its refrac-. V

tory covering 6 is called the combustion zone of the tube. Thelhomogeneity of the mixture is obtained bythe high tation which is maintained by'the rapid forward motion of the gas. This speed may be i 5y very great without being prejudicial to'the proper reactions, by reason of the prevail.- ing high pressure which increases the nam degree of agiber of gas molecules in contacjfwith-each solid particle. The reactions are also furthered by the concentration and rapid renew-a1 of the heat in the narow space of the producer.

its grate, k 'uixture obtained in acontinuous and ash in thepulverulent form such In these conditions, the final composition of the gas reduced, at the outlet from the bottom of t e tube 5 and at the moment at which it will begin to cool by contact with the walls having the surrounding air passing overthe same, is in all means similar to that .of an ordinary gas producer working with a body of incandescent fuel resting on because the three elements of the are constantly admitted in such p )portions that the oxygen admitted with the air should never exceed the weight necessary to convert the carbon in the coal to carbon monoxide, and, as a consequence the reactions set forth by combustion finally evolve carbon monoxide, hydrogen-end onl a slight volume of carbon dioxid. 'A slight excess of carbon will suflice to afford a reducing atmosphere; which is favorable to the formation of hydrogen'and carbon monoxide.

To the extent'in which the reduction of temperature in the producer will not excessively increase the proportion of carbon dioxide one introduces together with the coal a su cient quantity of water in order that the heat in the producer tube shall remain below the melting point of the coal ashes or cinders used so as to prevent adherence thereof to the walls and to maintain the as will facilitate the removal of the same.

- When traversing the lower portion of thetube 5, the gas which is formed will give up the major part of its heat to the compresser air which is to be used for supplying the gas producer. The water spray injected by the nozzle 12 disposed at the inlet of the worm? completes the cooling of the gas, and absorbs the sulphurous and phosphorous acid products formed by reason of the high temperature to which the fuel and gas are sub ected in the producer, and which acid products are easil soluble in' water, said water formin wit -the ash a fluid mud. The said mu is projected by centrifugal force upon the walls of said worm tube; the friction of the gas will draw alon the same as far as the orifice 8. The said uid mud from the ash will drop into the receptacle 9 whence .it is remove in a continuous or intermittent mahner through the cook 10.

The gas discharged from the pipe 11 is therefore in acool state and iscleaned,purilied and sufficiently dried, without requiring any additional apparatus, thus being automatlc manner. Furthermore, by reason of the operating method which is adopted for the combustion, the gas will at no time contain,

tar or vaporous hydrocarbons of an unstable nature. The said gas has therefore a fixed character.

Should it be found advisable, one may y pressure, either by suction or delive tube,

state the powder of very which is not agglomer- 1 and the wall In this event the water i between the inof the tube 1, of a water jacket constitutin a boiler for the production of steam which is to be injected together with the air and the coal into the combustion zone of the tube 5. c

It is obvious that the apparatus may be operated. at a pressure near atmospheric 1n the same conditions as for compresse air while maintaining at the same time all its advantages. i

What I claim is: p

1. A {gas producer employing powdered carbon uel with continuous and automatic operation comprising in combination an outer tube, a compressed air pipe entering at the lower part of said outer tube, an inner tube open at the top, a powdered fuel receptacle in communication with the upper part of said inner tube, a refractory covering upon the upper portion formin a combustion zone of said inner tube, an an uncovered portion of said inner tube justbelowsaid refractory portion. 2. A gas producer employin powdered carbon fuel with continuous an automatic operation comprising in combination an Buter tube, a compressed air pipe entering at the lower part of said outer tube, an inner tube open at the top, a powdered fuel receptacle in communication with the upper part of said inner tube, a refractory covermg upon the upper portion forming a combustion zone of said inner tube, an uncovered portion of said inner tube just below said refractory portion, a worm. tube in co munication withthe lower part of said inng1 tube, means for injecting water into s worm tube, an ash receptacle at the end of said worm tube, and a gas outlet pipe from said ash receptacle.

gas producer employin p0 vdered carbon fuel with continuous an au bmatic operation comprising in combination an outer tube, a at the lower part of said tube, an inner tube open at the top, a powdered fuel receptacle, a fuel feeding device-from said receptacle into the upper part of said inner tube, a meter on said air piping, the shaft of which actuates the carbon fuel feeding device, a refractory covering upon the upper portion orming a combustion zone of the inner tube just below said refracto part of said inner tube, means for injectcompressed air pipe entering Ill! an uncovered portion of said inner portlon, a I worm tube in communication with the lower.

connecting pipe ing water iiito said worm tube, an ash receptacle at the end of said Worm tube,- and a gas outlet pipe from said ash receptacle.

as producer employin powdered carbon iuei with'continuous an automatic operation comprising in combination an outer tube, a compressed air pipe entering at the lower part of said tube, an inner tube open at the top, a powdered fuel receptacle, a fuel feeding device from said rece tacle into the upper art of said inner tu e, a. tween the air piping and the upper part of said receptacle, a meter i on said air pipe the shaft of which actuates the carbon-fuel feeding device, a refractory n communication with the lower part of 20 said inner tube, means for m ectlng Water into said worm tube, an ash receptacle at the end of said worm tube, and a gas outlet pipe from said ash receptacle.

to witness whereof I have hereunto set 25 my hand.

JU'LES BABIN. 

